Regulations last checked for updates: May 01, 2025

Title 40 - Protection of Environment last revised: Nov 01, 2025
All TitlesTitle 40Chapter IPart 81Subpart D - Subpart D—Identification of Mandatory Class I Federal Areas Where Visibility Is an Important Value
View all text of Subpart D [§ 81.400 - § 81.437]
§ 81.434 - Washington.
Area name Acreage Public Law establishing Federal land manager
Alpine Lakes Wild303,50894-357USDA-FS
Glacier Peak Wild464,25888-577USDA-FS
Goat Rocks Wild82,68088-577USDA-FS
Mount Adams Wild32,35688-577USDA-FS
Mount Rainer NP235,239( 1)USDI-NPS
North Cascades NP503,27790-554USDI-NPS
Olympic NP892,57875-778USDI-NPS
Pasayten Wild505,52490-544USDA-FS

1 30 Stat. 993 (55th Cong.).

authority: 42 U.S.C. 7401,
source: 36 FR 22421, Nov. 25, 1971, unless otherwise noted.
cite as: 40 CFR 81.434
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